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I think the return on investment is what's drawing so many climbers into the sport. Most people only get to see the mountains through the window of a car or on the calendar hanging from the fridge. We get to see them from the end of a rope. That's worth a bunch.

No doubt! It has taken me to the most amazing, beautiful places I have ever been!

foa back was a "waterproof" technology that Choiunard developed in the mid 70's (pre Gortex). Basically a laminate of thin (~1/8 inch) closed cell foam on the inside and a heavy duty waterproof outer - coated heavy duty nylon or something. It didn't breath - no vapor could pass through - but the theory was that the foam would absorb your sweat and keep your inner layer(s) dry.

I've never heard of Foam back either. Interesting.The first time I learned about Gore Tex was '81 or '82. I guess it was relatively new then and maybe only commonly known in and around Seattle (where I lived '81 to '85).

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"You have to decide to do a flag, where you can broke your vertebrae or a barn door depending of your pro" - the poster formerly known as Champ

Foam back was a round a while ..it was from Chouinard or maybe even Great pacific iron Works !! They also brought us the infamous Tump Line (don't ask)..I think Gore was around the same time as Koflach's came out..or Why are people wearing ski boots ice climbing ? '81/82

They try to increase the efficiency of cotton with a vapor barier and cell foam. So, t-shirt have good roots.

I must say that if Chouinard took the idea, it was because some thing was good in it. Gore tex appear and for 400$ you can have the best Jacket...but still just a jacket is cold, you most have different layer under it. The use of cotton need a good knowledge of weahter and of our metabolism to prevent over heat.

You sweat because your body is overheated..period. If what ever you are wearing gets soaked, you have too much on.

The problem if you can overheat for 200 feet and froze after. an overheat again.

I was waiting at athe bottom of a route that my partner belay me, it was very cold. When I began to climb, I used a lot of eenergy. All the cold blood of my arms was going to the heart and brain, creating a mild hypothermia: sick, shivering, finger too cold, etc..